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Your Health, Calculated

Professional-grade health and fitness calculators powered by science. Get accurate insights about your BMI, daily calories, macros, body fat, and more — instantly.

Trusted by 50,000+ users across 180 countries

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50,000+

Active Users

500,000+

Calculations Completed

2,000+

Health Professionals Use aduria

180+

Countries Supported

Our Tools

Everything you need to understand your health

Choose from our suite of science-backed health calculators — all free, all instant.

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BMI Calculator

Calculate your Body Mass Index

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TDEE Calculator

Calculate your daily calorie needs

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Macro Calculator

Calculate optimal macronutrient ratios

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Water Intake

Calculate daily water requirements

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Ideal Weight

Find your healthy weight range

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Body Fat %

Estimate your body fat percentage

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Why aduria

Built for accuracy. Designed for simplicity.

Science-Based

All calculations use validated formulas from peer-reviewed research and health professionals.

Instant Results

No waiting, no sign-up. Get your health metrics calculated in seconds.

Privacy First

Your data never leaves your browser. All calculations run locally on your device.

Metric & Imperial

Full support for both unit systems. Switch anytime with a single tap.

Mobile Friendly

Perfectly responsive on any device — desktop, tablet, or phone.

Completely Free

No ads, no paywalls, no hidden fees. Honest health tools for everyone.

Testimonials

Trusted by users worldwide

“aduria helped me understand my calorie needs and macros. The calculators are accurate and the advice is practical.”

Sarah Chen

Fitness Enthusiast

“I recommend aduria to all my clients. The calculations are based on solid science and the interface is intuitive.”

Michael Rodriguez

Nutrition Coach

“The most reliable calculator suite I've found. My clients love the personalized recommendations.”

Emma Williams

Health Coach

FAQ

Common questions

What is BMI and why does it matter?

BMI (Body Mass Index) is a measurement of body fat based on height and weight. While not perfect, it's a useful screening tool for health risks associated with weight.

How accurate are these calculators?

Our calculators use scientifically-validated formulas (Harris-Benedict, Mifflin-St Jeor, etc.). However, individual results may vary based on factors like metabolism and muscle mass.

Can I use these calculators for serious health decisions?

These are educational tools only. Always consult with a healthcare provider or registered dietitian before making significant health or dietary changes.

How often should I recalculate my metrics?

Recalculate your metrics every 4-6 weeks as your body composition changes, or whenever there's a significant change in weight or fitness level.

What's the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is calories burned at rest. TDEE (Total Daily Energy Expenditure) is BMR multiplied by your activity level.

How do I use macros for my fitness goals?

Macros (protein, carbs, fats) help you structure your diet. Higher protein supports muscle, carbs fuel workouts, and fats support hormones.

Ready to take control of your health?

Start with any calculator and discover your personalized health metrics — completely free, no signup required.

Medical Disclaimer: These calculators provide educational information only and are not a substitute for professional medical advice. Always consult with a qualified healthcare provider or registered dietitian before making significant changes to your diet or exercise routine. Results may vary based on individual factors. See our privacy policy for more information.